Parent Topic: PROJ

UTM GRID ZONES

UTM zones divide the earth into columns, west to east. Each UTM zone can be divided into rows, south to north. If both the UTM zone and row are given, the area defined is referred to as a UTM grid zone. For example UTM30N is the area just west of Greenwich and just north of the equator.

A UTM grid zone can be divided further. However within EASI/PACE, the row is only used to determine if the coordinates are north or south of the equator. If the UTM zone is defined and the row is not, the coordinates are assumed to be north of the equator. Coordinates north of the equator are assumed to have a false northing of 0.0 metres while coordinates south of the equator are assumed to have a false northing of 10000000.0 metres.

 UTM        Row                        UTM        Row
 Row       Range                       Row       Range
 C      80S -  72S                     N       0N -   8N
 D      72S -  64S                     P       8N -  16N
 E      64S -  56S                     Q      16N -  24N
 F      56S -  48S                     R      24N -  32N
 G      48S -  40S                     S      32N -  40N
 H      40S -  32S                     T      40N -  48N
 J      32S -  24S                     U      48N -  56N
 K      24S -  16S                     V      56N -  64N
 L      16S -   8S                     W      64N -  72N
 M       8S -   0N                     X      72N -  84N

 Note: - There is no row I or row O.

All rows are 8 degrees latitude, except row X which has 12 degrees latitude.
Grid zones A, B, Y, and Z exist, but are not valid for the UTM projection. They are used for the polar regions (A and B for the South Pole; Y and Z for the North Pole), which are mapped with the Universal Polar Stereographic (UPS) projection.

Parent Topic: PROJ
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